Fifth wheel coupling

Details Fifth wheel coupling Fifth wheel coupling

1989-02-13

1990-05-29

Marmor, Charles A.

Land vehicles

Wheeled

Articulated vehicle

280433, 280434, 384421, 384594, B62D 5308, B62D 5312

Patent

active

049289870

ABSTRACT:
A fifth wheel coupling for connection of a semitrailer to a tractor unit is disclosed in which a pair of symmetrical, swivel-articulated closing jaws having semicircular recesses for grasping the king pin have a split bearing comprising an outer bearing half fixed in each closing jaw and inner bearing halves rotatable with respect to the outer bearing halves. The split bearing includes a mechanism for returning each inner bearing half to a position aligned with its respective outer bearing half for uncoupling. The split bearing eliminates friction between the king pin and the closing jaws and is substantially free from wear and maintenance.

REFERENCES:
patent: 3352571 (1967-11-01), Nelson
patent: 3539202 (1970-11-01), Nelson

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